1157599109 has 2 divisors, whose sum is σ = 1157599110. Its totient is φ = 1157599108.

The previous prime is 1157599099. The next prime is 1157599127. The reversal of 1157599109 is 9019957511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1031822884 + 125776225 = 32122^2 + 11215^2 .

It is a cyclic number.

It is not a de Polignac number, because 1157599109 - 2⁸ = 1157598853 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1157599169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578799554 + 578799555.

It is an arithmetic number, because the mean of its divisors is an integer number (578799555).

Almost surely, 2^1157599109 is an apocalyptic number.

It is an amenable number.

1157599109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157599109 is an equidigital number, since it uses as much as digits as its factorization.

1157599109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127575, while the sum is 47.

The square root of 1157599109 is about 34023.5081818439. The cubic root of 1157599109 is about 1049.9921719749.

The spelling of 1157599109 in words is "one billion, one hundred fifty-seven million, five hundred ninety-nine thousand, one hundred nine".